python - Get (and sum) values of all attributes named 'test' in XML -


example xml doc:

<main>   <this test="500">     <that test="200"/>   </this> </main>

result: 700

all existing code snippets i've found on site , others rely on tag. example, "500" if reference both "this" , "test". i'm looking search "test" throughout entire doc/string.

some modules i've tried (and resulted in failure) lxml, xml.dom, elementtree, xmltodict, , beautifulsoup,

i'd suggest favor lxml parsing xml in python. lxml has full xpath 1.0 support, , xpath language/technology designed querying xml.

once have right tool right job, can f.e :

import lxml.etree et  xml = """<main>   <this test="500">     <that test="200"/>   </this> </main>""" doc = et.fromstring(xml) result = doc.xpath("sum(//@test)") print(result)

output :

700.0

brief explanation xpath being used :

  • //@test : find test attribute anywhere in xml document.
  • sum() : return sum of parameter

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